Pleasant Hill, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.3 °F (low) to 65.1 °F (high). Annual precipitation averages 45 Inches. Pleasant Hill is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.7 °F | 38.9 °F | 1.49 in. |
| February | 23.6 °F | 43.8 °F | 1.91 in. |
| March | 33.1 °F | 54.7 °F | 3.04 in. |
| April | 43.4 °F | 65.5 °F | 4.61 in. |
| May | 54.2 °F | 74.7 °F | 5.89 in. |
| June | 63.7 °F | 83.6 °F | 5.91 in. |
| July | 67.9 °F | 88.3 °F | 4.83 in. |
| August | 65.8 °F | 87.1 °F | 4.55 in. |
| September | 57.3 °F | 79.6 °F | 4.59 in. |
| October | 45.0 °F | 67.9 °F | 3.73 in. |
| November | 33.9 °F | 54.3 °F | 2.58 in. |
| December | 24.4 °F | 42.9 °F | 1.91 in. |
| Annual | 44.3 °F | 65.1 °F | 45.04 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |